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Assertion (A): The inner cell mass of bl...

Assertion (A): The inner cell mass of blastocyst gets attached to the endometrium during embryonic developed in humans
Reason (R): The blastomeres in the blastocyst gets arranged into trophoblast and inner cell mass.

A

Both (A) and (R) are true and (R) is the correct explanation of (A).

B

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

C

(A) is true but (R) is false.

D

(A) is false but (R) is true.

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Read the passage and answer the questions: Implantation is the embedding of the blastocyst into the endometrium of the uterus. Blastocyst is a ball of cells with a large, fluid-filled cavity called the blastocoel. The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and inner cell mass. With the formation of blastocoel, morula is converted to blastula which is called blastocyst in mammals. The ectoderm cells will form the........

Read the passage and answer the questions: Implantation is the embedding of the blastocyst into the endometrium of the uterus. Blastocyst is a ball of cells with a large, fluid-filled cavity called the blastocoel. The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and inner cell mass. With the formation of blastocoel, morula is converted to blastula which is called blastocyst in mammals. Assertion (A): Blastocyst undergoes gastrulation to form three germinal layers. Reason (R): This involves cell movements (morphogenetic movement) that help to attain new shape and morphology of embryo.

Read the passage and answer the questions: Implantation is the embedding of the blastocyst into the endometrium of the uterus. Blastocyst is a ball of cells with a large, fluid-filled cavity called the blastocoel. The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and inner cell mass. With the formation of blastocoel, morula is converted to blastula which is called blastocyst in mammals. State of embryo development, in which implantation occurs in human female is:

Read the passage and answer the questions: Implantation is the embedding of the blastocyst into the endometrium of the uterus. Blastocyst is a ball of cells with a large, fluid-filled cavity called the blastocoel. The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and inner cell mass. With the formation of blastocoel, morula is converted to blastula which is called blastocyst in mammals. Which organ is formed during gastrulation ?

Read the passage and answer the questions: Implantation is the embedding of the blastocyst into the endometrium of the uterus. Blastocyst is a ball of cells with a large, fluid-filled cavity called the blastocoel. The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and inner cell mass. With the formation of blastocoel, morula is converted to blastula which is called blastocyst in mammals. The process that transforms the embryo into a three-layered stage is called.....

Assertion: During implantation, the trophoblast layer gets attached to the endometrium. Reason: The inner cell mass of the blastocyst gets differentiated as embryo.

What is the function of inner cell mass?

During embryonic development, embedding of blastocyst into the endometrium of uterus is termed as

given below are four statements (i)-(iv) reagarding embryonic development in humans. (i). Cleavage divisions about considerable increase I the mass of protoplasm (ii). With more cleavage divisions, the resultant blatomeres become smaller and smaller. (iii). the blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium. (iv). Cleavage divisions result in a solid ball of cells called morula. Which of the above two statemetns are correct?

Mass of cells formed during early embryomic development of an animal is

XII BOARDS PREVIOUS YEAR-QUESTION PAPER 2022 TERM 1 SET 1-SECTION-B
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